[cisco-voip] Checking hardware -- PRI

[Peter Slow]

Errrr.... Also I sort of jumped the gun....

> I have shut not shut the interface but I continue to get RTMT reports that the D channel is down(every 1 - 3 minutes).  Router has been up for
> multiple days.(had a power outage last week). but d channel went down yesterday afternoon.

...This can mean a TON of things... You're goign to see this alert if
your GW ungesisters from your CCM. That could easily be due to a
network issue. Its entirely possible that your interface is bouncing
at one layer or another when it unregisters or re-registers with your
CCM, that could explain your controller errors. We need to see what's
happening first. Is the GW losing registration with the CCM for a
network or software-related reason, or is the actual T1 interface
bouncing, or is there a different issues thats just causing a problem
with the q.931 signaling.

we need:
debug mgcp packet
debug isdn q931
debug ccm-manager backhaul events
debug ccm-manager config-download all

...and anythign that appears in syslog, such as interface protocol
state changes (int x is up down etc)

...begging before and ending after the occurrence of one of the
D-Channel OOS events.

-Peter

On Mon, Feb 15, 2010 at 11:17 AM, Peter Slow <peter.slow at gmail.com> wrote:
> I recommend doing one of two things:
>
> if you have hardware to accommodate a second PRI, wire it up to this
> one and set them up back to back, and we'll see if the issue
> continues, and if you keep getting errors or not.
>
> If you can't go with option 1, you need to slap a loopback into that
> bad boy and set it up as an HDLC encapsulated data T1 and we can send
> packets of various sizes over it to see if you get any errors that
> way.
>
> Pick one, and we'll go through the specifics =)
>
> -Peter
>
>
>
> On Mon, Feb 15, 2010 at 11:10 AM, Scott Voll <svoll.voip at gmail.com> wrote:
>> show isdn stat shows multiple frames established which makes me still think
>> it's a Telco issue.  any other ideas?
>> Scott
>> ps. I have no mgcp -- mgcp.
>>
>> On Mon, Feb 15, 2010 at 7:53 AM, Scott Voll <svoll.voip at gmail.com> wrote:
>>>
>>> I have a ticket in with the local telco, but I have a D channel on my PRI
>>> that is bouncing about every 1-3 minutes.
>>> How do I check to make sure it's not a hardware issue on my side?
>>> it's a 2851 with vwic-2mft-t1=
>>> I see on the controller in the last 24 hours it has 1610 path code
>>> violations, 9 line code violoations, 2 serverly err secs, and 6 unavail
>>> secs. but nothing in the current interval.
>>> I have shut not shut the interface but I continue to get RTMT reports that
>>> the D channel is down(every 1 - 3 minutes).  Router has been up for multiple
>>> days.(had a power outage last week). but d channel went down yesterday
>>> afternoon.
>>> What else should I be looking at.
>>> Thanks
>>> Scott
>>> ps. CM 6.1.3 and MGCP.
>>
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>